My update to the latest WHM got stuck around 50%, doing (Running sanity checks and notifications.), (Processing command `/usr/local/cpanel/scripts/setup_whmxfer_db`), for more than 50 minutes. The page still loads, but nothing is progressing.

Of course, all my websites are down due to (database connection error), so, once I try to go the the WHM (from a different window), I do see it is updated, and it shows the latest version of 11.46.1, however, I can not seem to start MySQL, which might be corrupted.

What do you think I should be doing next? I do have a server backup but wish to make this the last resort?

Basically, This is what happened. I have 3 sites (wordpress) and all of them showed (database connection error) while WHM is being updated. So weird. While updating cPanel/WHM, I ticked that little box to allow sharing update process with cPanel.

I started SQL from WHM menu -->restart services --> SQL services. The first time, it failed, then, worked again and show these errors multiple times.